This hexagonal loop of wire is in a uniform magnetic field; at t = 0 s, the fiel
ID: 1553841 • Letter: T
Question
This hexagonal loop of wire is in a uniform magnetic field; at t = 0 s, the field begins decreasing at a rate of 43 T/s: (f) Direction of the Current through the loop before t = 0 s (g) Direction of the Original Magnetic Field (the field not created by any current in the loop) (h) Change in magnetic flux for loop after t = 0 s (i) Direction of the Induced Magnetic Field after t = 0 s (at the loop's center) (j) Direction of the Induced Current through the loop after t = 0 s III: The figure shows a side view of a loop of wire with a bar magnet near but below the loop. The bar magnet's north pole is aimed up (towards the loop). At t = 0 s, the magnet is moved; it is either raised or moved rightExplanation / Answer
(f) Direction of the Current through the loop before t=0 s.
There will not be any current through the loop before t=0 s because magnetic field was uniform(constant) before t=0s and hence there was no change in flux therefore no induced current.
(g) Direction of the Original Magnetic Field (the field not created by any current in the loop)
Direction of original magnetic field will be out of the page
(h) Change in magnetic flux for loop after t=0s.
Change in magnetic flux for the loop will be constant because magnetic field is decreasing with a constant rate and Change in flux = Area of the loop x Change in magnetic field
(i) Direction of the Induced Magnetic Field after t=0s (at the loop's center)
Direction of Induced Mgnetic Field at the loop's centre will be out of the page because direction of induced current will be in such a way so that it will oppose change in magnetic field. So if magnetic field is decreasing, induced current will try to increase the net magnetic field so induced magnetic field at the loop's centre will be out of the page.
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